ALERTER is a playable word

alert Scrabble® Dictionary

adjective
alerter, alertest
ready for sudden action
(adverb) alertly
verb
alerted, alerting, alerts
to warn
84 Playable Words can be made from "ALERTER"
   2-Letter Words (11 found)
   3-Letter Words (25 found)
   6-Letter Words (7 found)
   7-Letter Words (4 found)